Resonant oil-water sensor

Abstract

The utility model discloses a resonance oil-water sensor, which comprises a seat body, a vibration plate and a vibration transmission rod, a support I, a support II and a through hole are arranged on the seat body, and an electromagnetic coil I and an iron core are arranged on the support I; an electromagnetic coil II and a permanent magnet are arranged on the support II; the iron core is connected with the permanent magnet through a swing rod; the vibration transmission rod is fixedly arranged on the swing rod, and one end of the vibration transmission rod penetrates through the penetrating hole and then is connected with the vibration plate. According to the resonance oil-water sensor, the first electromagnetic coil is connected to the power source with the specific frequency to enable the iron core to generate vibration with the specific frequency, the vibration is guided into the vibration plate in the liquid to be measured through the vibration transmission rod, and different responses of oil and water in the liquid to be measured to the vibration are fed back to the vibration transmission rod to cause different amplitudes of the swing rod. Therefore, the to-be-detected liquid is oil or water. The resonance oil-water sensor disclosed by the utility model is simple in structure, high in sensitivity and strong in reliability.

Description

Technical Field

[0001] This utility model belongs to the field of petrochemical technology, specifically a resonant oil-water sensor. Background Technology

[0002] Due to the petrochemical process, petroleum products always contain a certain amount of water, even in trace quantities. When oil is stored in large tanks, water, being denser than oil, slowly settles at the bottom. Therefore, oil and water are typically separated using a water separator, which requires identifying the oil-water boundary during the process. Additionally, when crude oil is pumped to the surface, it contains many impurities (such as water and sand). During operation, these impurities are separated, and the resulting water is called produced water. Produced water contains a significant amount of oil and cannot be directly discharged or used. Further separation of the oil from the produced water is necessary to ensure that the discharged water meets environmental standards, requiring monitoring of the oil-water boundary. Currently, most oil-water sensor solutions on the market use capacitive sensors for detection, which are relatively expensive. Even the hybrid oil-water mixture detection sensor, such as CN202210917352.8, uses a hybrid sensor composed of a plug-in water level sensor and a photoelectric liquid level sensor, and then uses peripheral modules such as a microcontroller to realize data processing and transmission. It has a lower cost when deployed on a large scale, but it is only suitable for large-scale deployment. For single-machine detection, it is like using a sledgehammer to crack a nut. Utility Model Content

[0003] The present invention aims to solve at least one of the above-mentioned technical problems by providing a resonant oil-water sensor, including a base (1), a vibrating plate (7), and a vibration transmission rod (4). The base (1) is provided with a first support (11), a second support (12), and a through hole (15). An electromagnetic coil (21) is provided on the first support (11), and an iron core (22) is provided in the electromagnetic coil (21). An electromagnetic coil (31) is provided on the second support (12), and a permanent magnet (32) is provided in the electromagnetic coil (31). The iron core (22) and the permanent magnet (32) are connected by a swing rod (33). The vibration transmission rod (4) is fixedly installed on the swing rod (33), and one end of it passes through the through hole (15) and is connected to the vibrating plate (7).

[0004] Furthermore, it also includes a rod sleeve (5), one end of which is fixedly disposed in the through hole (15), and the other end is fixedly and sealed to one end of the vibration transmission rod (4) through a connecting sleeve (6).

[0005] Furthermore, the base (1) is also provided with support three (13) and support four (14). The vibration transmission rod (4) is located at the center of support one (11), support two (12), support three (13), and support four (14). The other end of the vibration transmission rod (4) is fixedly connected to support one (11), support two (12), support three (13), and support four (14) respectively by steel wire (9).

[0006] Furthermore, it also includes an excitation power supply electrically connected to the electromagnetic coil (21), the frequency of which is 700-780Hz.

[0007] Furthermore, it also includes a voltage and current sampling device connected to the electromagnetic coil (31).

[0008] Furthermore, it also includes a temperature sensor (8) located on the seat (1) near the vibrating plate (7).

[0009] This invention provides a resonant oil-water sensor. An electromagnetic coil is connected to a power supply of a specific frequency, causing the iron core to vibrate at that frequency. This vibration is transmitted to a vibrating plate in the liquid being tested via a transmission rod. The different reactions of oil and water in the liquid to this vibration are fed back to the transmission rod, causing different amplitudes of the pendulum, thus distinguishing whether the liquid being tested is oil or water. This resonant oil-water sensor features a simple structure, high sensitivity, and strong reliability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the resonant oil-water sensor of this utility model;

[0011] Figure 2 yes Figure 1 A cross-sectional structural diagram of the central support and vibration transmission rod.

[0012] In the diagram: 1. Base; 11. Support 1; 12. Support 2; 13. Support 3; 14. Support 4; 15. Perforation; 21. Electromagnetic coil 1; 22. Iron core; 31. Electromagnetic coil 2; 32. Permanent magnet; 33. Pendulum rod; 4. Vibration transmission rod; 5. Rod sleeve; 6. Connecting sleeve; 7. Vibrating plate; 8. Temperature detector; 9. Steel wire. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. At the same time, it should be understood that the specific embodiments described herein are merely used to explain the present utility model and are not intended to limit the present utility model.

[0014] like Figure 1 As shown, a resonant oil-water sensor includes a base 1, a vibrating plate 7, and a vibration transmission rod 4. The base 1 is provided with a first support 11, a second support 12, a third support 13, a fourth support 14, and a through hole 15. The through hole 15 is located at the center of the first support 11, the second support 12, the third support 13, and the fourth support 14.

[0015] An electromagnetic coil 21 is mounted on the support 11, and an iron core 22 is disposed within the electromagnetic coil 21. The support also includes an excitation power supply electrically connected to the electromagnetic coil 21, the frequency of which is 700-780Hz. When energized, the excitation power supply provides excitation power to the iron core, causing it to vibrate.

[0016] An electromagnetic coil 31 is mounted on the second support 12, and a voltage and current sampling device is connected to the electromagnetic coil 31. A permanent magnet 32 ​​is installed in the electromagnetic coil 31; the iron core 22 is connected to the permanent magnet 32 ​​via a pendulum rod 33. When the iron core vibrates, the permanent magnet vibrates accordingly, causing an induced current to be generated in the electromagnetic coil.

[0017] The vibration transmission rod 4 is located at the center of the first support 11, the second support 12, the third support 13, and the fourth support 14. The vibration transmission rod 4 is fixedly mounted on the swing rod 33, and one end of it passes through the through hole 15 and is connected to the vibrating plate 7. The other end of the vibration transmission rod 4 is fixedly connected to the first support 11, the second support 12, the third support 13, and the fourth support 14 by steel wires 9.

[0018] It also includes a sleeve 5, which is a thin-walled tube through which the vibration transmission rod passes. One end of the sleeve 5 is fixedly installed in the through hole 15, and the other end is fixedly and sealed to one end of the vibration transmission rod 4 through a connecting sleeve 6. After the vibration transmission rod passes through the through hole on the base, one end of the sleeve is fixedly and sealed to the through hole, sealing and separating the two sides of the base, while also supporting the vibration transmission rod.

[0019] It also includes a temperature sensor 8 located on the seat 1 near the vibrating plate 7.

[0020] When using the resonant oil-water sensor of this embodiment for liquid detection, its vibrating plate is placed in the liquid to be tested, the voltage and current sampling device is turned on, and the excitation power supply is connected. The frequency of the excitation power supply is adjusted to 700-780Hz. In this embodiment, during the test, the excitation power supply frequency was adjusted to 744Hz. When the vibrating plate was placed in water, the vibrating plate resonated, and the measured voltage was 3.3V and the current was 20mA. When the vibrating plate was placed in an oil-water mixture, the vibrating plate did not resonate, and the measured voltage was 0.236V and the current was 7.54mA, with an oil content of 3.89%. Therefore, the difference in current and voltage measured by the vibrating plate in the oil-water mixture and in water is by orders of magnitude, which can be used to determine whether the liquid to be tested is oil, water, or an oil-water mixture.

[0021] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A resonant oil-water sensor, characterized in that: The device includes a base (1), a vibrating plate (7), and a vibration transmission rod (4). The base (1) is provided with a first support (11), a second support (12), and a through hole (15). An electromagnetic coil (21) is provided on the first support (11), and an iron core (22) is provided in the electromagnetic coil (21). An electromagnetic coil (31) is provided on the second support (12), and a permanent magnet (32) is provided in the electromagnetic coil (31). The iron core (22) and the permanent magnet (32) are connected by a swing rod (33). The vibration transmission rod (4) is fixedly installed on the swing rod (33), and one end of it passes through the through hole (15) and is connected to the vibrating plate (7).

2. The resonant oil-water sensor according to claim 1, characterized in that: It also includes a rod sleeve (5), one end of which is fixedly disposed in the through hole (15), and the other end is fixedly and sealed to one end of the vibration transmission rod (4) through a connecting sleeve (6).

3. The resonant oil-water sensor according to claim 1, characterized in that: The base (1) is also provided with support three (13) and support four (14). The vibration transmission rod (4) is located at the center of support one (11), support two (12), support three (13) and support four (14). The other end of the vibration transmission rod (4) is fixedly connected to support one (11), support two (12), support three (13) and support four (14) respectively by steel wire (9).

4. The resonant oil-water sensor according to claim 1, characterized in that: It also includes an excitation power supply electrically connected to the electromagnetic coil (21), the frequency of which is 700-780Hz.

5. The resonant oil-water sensor according to claim 1, characterized in that: It also includes a voltage and current sampling device connected to the electromagnetic coil (31).

6. The resonant oil-water sensor according to claim 1, characterized in that: It also includes a temperature sensor (8) located on the seat (1) near the vibrating plate (7).

Images